Frozen Shoulder: Exercises, Strength Training and Treatment [2026]

The complete guide to frozen shoulder — why no treatment has been shown to shorten the course, and how structured strength training keeps you strong and active while the condition resolves on its own — with better results than doing nothing or passive treatments alone.

When Riad's shoulder suddenly locked up, he was convinced he would never be able to train upper body properly again. It had started with pain that had slowly built up over several weeks. Then the shoulder suddenly locked. He could barely lift his arm.

"I thought I had to stop training," he told us.

"My doctor said it could take up to several years. The thought of sitting still that long was worse than the pain." He was told nothing about what he could do to make the course as good for himself as possible.

Riad is not alone. A frozen shoulder affects 2-5 % of the population, most often women between 40 and 60 years of age. If you have diabetes, the risk increases to 10-20 %. And up to 20 % subsequently get it in the opposite shoulder.

It is a condition that can feel overwhelming — particularly because it typically lasts 1-3 years.

But here is what Riad's doctor should have told him: No treatment has been shown to significantly shorten the course. Neither traditional physiotherapy, manipulation under anesthesia nor surgery. But — and this is the important part — you can train your way through it. And the people who do come out better on the other side than those who do nothing or only choose passive treatment forms.

That was exactly what we told Riad during his personal training with us. And it was welcome news that increased his motivation and mood considerably — he was ready to focus on what he could do something about, rather than what he couldn't.

What is a frozen shoulder?

A frozen shoulder — also called adhesive capsulitis — occurs when the capsule surrounding the shoulder joint becomes inflamed, thickened and tight. The capsule is the soft tissue that envelops the joint and holds it together. When it contracts, it restricts both active and passive range of motion.

It is not an injury in the traditional sense. Nothing is broken.

The shoulder is not damaged — it is locked. And that is an important distinction, because it changes the entire approach to how you should handle it.

The most characteristic feature of a frozen shoulder is restriction in external rotation: you have difficulty rotating the arm outward. This is followed by restricted ability to bring the arm out to the side and overhead. The movements feel stiff and hard — as if the shoulder is stuck in a certain area.

But more recent research shows that it is not only the tissue itself that restricts you. Part of the stiffness is due to muscle guarding — the body's protective reaction where the muscles around the shoulder tense up to avoid pain. Research shows that patients with frozen shoulder gained markedly more range of motion under anesthesia, where muscle guarding was removed. This means that pain and the body's protective mechanism play a larger role than previously thought — and that the restriction in range of motion is not solely about tight structures.

This is an important insight, because it explains why it makes sense to remain active and train within what you can tolerate — rather than waiting for the tissue to "loosen up."

The cause of the condition itself is not fully understood. It often occurs without a clear triggering factor. It is associated with diabetes, metabolic diseases and periods of immobilization, but many experience it entirely without prior injury or illness.

Are frozen shoulder and impingement the same thing?

No. They are two different conditions. With a frozen shoulder, it is stiffness and loss of range of motion that dominates — the shoulder gradually locks up, and you lose the ability to move it, regardless of whether you try yourself or someone helps. With shoulder impingement, it is primarily pain with movement that is the problem — you can still move the arm, but it hurts, especially when you lift it out to the side or overhead. The treatment principle is however the same: active, adapted training delivers better results than inactivity.

Symptoms of frozen shoulder

Frozen shoulder symptoms develop gradually and typically follow a pattern with three overlapping phases. But in practice, the phases are not as sharply separated as textbooks suggest — Riad's course is a good example: the pain built up slowly, and then the shoulder seemingly locked from one day to the next.

The three phases: freezing, frozen and thawing

If you have been diagnosed with a frozen shoulder, you have probably heard about the three frozen shoulder phases. Here is an overview of what they cover:

In the first phase — called "freezing" — pain dominates. The shoulder begins to hurt, often gradually, and the pain typically worsens at night. Range of motion begins to decline, but it is the pain that fills the most. This phase typically lasts 2-9 months.

In the next phase — "frozen" — the pain slowly subsides, but stiffness takes over. You notice it clearly in daily life: it becomes difficult to put on a jacket, reach up into a cupboard or fasten a bra. This phase can last 4-12 months.

In the third phase — "thawing" — range of motion gradually begins to return. It often happens slowly and unevenly, but most people regain normal or near-normal function over time.

The total course — from the first frozen shoulder symptoms to full range of motion — typically takes 1-3 years. For some it can take longer. But the crucial point is: the condition resolves. The shoulder gets better.

In practice, however, the phases are not as sharply separated as it sounds. And we don't plan the training based on which phase you are in. We don't need to — because it happens automatically when we train according to what you can tolerate in terms of pain and mobility.

In the beginning, where pain dominates, we take that into account. We don't provoke the pain unnecessarily, but use the training to create pain relief — what is called exercise-induced hypoalgesia. Additionally, the training maintains your general health and physical capacity — which is particularly important if your frozen shoulder is associated with diabetes, where the metabolic system directly benefits from regular strength training.

Later, when stiffness is the primary issue, we focus on training within the range of motion you have. And when range of motion gradually returns, we follow along — exposing the shoulder to more and more, as it allows.

You don't need to think in phases. You just need to show up, and then one of our physiotherapists adapts.

Nighttime pain and sleep

One of the most burdensome symptoms of frozen shoulder is pain in the shoulder and arm at night. Many experience that the pain intensifies when they lie still — particularly if they lie on the affected side.

The nighttime pain is typically worst in the first phase, where the inflammation is most active, and subsides gradually as the pain gives way to stiffness.

It disrupts sleep and affects energy, mood and patience in daily life. Lying on the opposite side with a pillow as support under the arm can help. Some also experience relief from sleeping slightly upright. Regular strength training also improves sleep quality in general — yet another reason to remain active during the course.

What the research actually says about frozen shoulder treatment

This is perhaps the most important point in the entire article: There is no treatment that has been shown to be able to shorten the course of a frozen shoulder in a clinically meaningful way.

That is not an opinion. That is what the best available research shows.

A large study from 2020 — the largest randomized study of its kind — followed 503 patients with frozen shoulder at 35 hospitals in the United Kingdom. They compared three treatments: structured physiotherapy with steroid injection, manipulation under anesthesia and arthroscopic capsular release (surgery). The result? None of the three was clearly superior after 12 months. All three groups improved — but no treatment was markedly better than the others.

Physiotherapy was cheapest and most quickly available. Surgery had higher risks and costs. But across all three groups, patients regained function over time.

But that doesn't mean it doesn't matter what you do. Because when we look at the studies that compare active training with other approaches, a clear picture emerges.

One study followed 77 patients with frozen shoulder for two years. One group received intensive physiotherapy with passive stretching and manual mobilization — the classic approach where the therapist attempts to force range of motion into the shoulder. The other group received supportive guidance and exercises within the pain limit. The result was surprisingly clear: 89 % in the gentle, active group regained normal function after 24 months. In the intensive physiotherapy group, the number was only 63 %. Respecting the pain limit and training within what you can tolerate thus beat aggressive treatment by a significant margin.

A more recent study from 2023 compared structured training with oral cortisone. The training group was significantly better in abduction and external rotation after 12 weeks — with fewer side effects. Even compared to medication, well-planned training thus delivered better results.

There is not yet a study that isolates pure strength training for frozen shoulder — that would be interesting to see. But the direction in the research is clear: active, structured training within the pain limit delivers better results than both passive treatment and medication.

Cortisone injections — which many are offered as frozen shoulder treatment — provide short-term pain relief but don't change the duration of the course. If you and your doctor determine that it is necessary to take the edge off the pain in the acute phase, it can be valuable. But they are not a solution, and they should not be repeated indefinitely.

Massage, acupuncture and passive treatments? There is no convincing evidence that they change anything about the condition itself. They can provide temporary relief — and that has its own value — but they don't accelerate recovery.

That is why we at Nordic Performance Training take a different approach to frozen shoulder treatment. We don't focus on "fixing" the shoulder with passive methods. We focus on keeping you strong, active and in control while the body does its work.

And here, understanding plays a bigger role than most people think. As we described earlier, part of the restriction in range of motion is due to muscle guarding — the body's protective reaction to pain and uncertainty. When you understand your condition, know that the shoulder is not damaged, and train in a safe setting with a physiotherapist who knows the course — the body can relax more easily. You get further into your movements, not because the tissue has suddenly changed, but because the nervous system is no longer braking you as hard. This is pain modulation in practice: calm, competent guidance and knowledge about your own condition makes it possible to utilize the range of motion you actually have.

"We see it again and again: those who manage to stay positive and keep training what they can, get through it more easily." — Lucas Iversen, physiotherapist

Can you train a frozen shoulder away?

You cannot train a frozen shoulder away. But you can train your way through it — and that makes a significant difference.

As the research shows, active training within the pain limit is the approach that consistently delivers the best results. Not because it heals the shoulder faster — but because it keeps you strong, functional and mentally in a good position while the condition resolves.

We don't train the shoulder — we train the entire body. Same principle as we use for neck pain, lower back pain and knee pain: Structured strength training with individual adaptations delivers better results than inactivity.

Riad's story: 18 months with training

When Riad's frozen shoulder hit, his range of motion in the shoulder was close to zero. He couldn't lift his arm above horizontal, and he was convinced he had to stop training.

We explained to him what the research shows: No single treatment has been shown to be effective at shortening the course. The best thing he could do was to remain strong, active and optimistic — while the condition resolved on its own over time.

He chose to decline cortisone injections based on bad experiences with other injuries. We thought that was a fine decision, since his pain level was bearable in daily life, and he was motivated to continue. We always prefer to avoid overtreatment if possible, as long as the medical assessment supports it — particularly when it involves medical and surgical treatment.

So that was exactly what he did. Under the guidance of physiotherapist Lucas Iversen, Riad followed his Full Body program — simply with relevant adaptations.

The specific changes we made: Instead of the typical set-up we use in a Machine Chest Press, we changed it to a decline angle. Instead of pressing forward and up — which requires the arm to be moved relatively high up and away from the side of the torso (two movements that are restricted in a frozen shoulder) — he could keep his elbows a bit closer to the body and press in a more downward direction. This bypassed the movement his shoulder couldn't tolerate, while the chest and triceps were still trained as heavy as he could tolerate.

His Dumbbell Shoulder Press was dropped entirely. Overhead movement was simply not possible, and as the research also confirms, it is usually not a good idea to force yourself into positions the shoulder is not comfortable with — yet.

Cable Pulldown was temporarily replaced by Cable Row, because he couldn't get his arms far enough overhead in the beginning. But by starting with a leaned-back position and then gradually leaning more and more forward as mobility returned, we could naturally reintroduce pulldowns again.

Dumbbell Lateral Raise was switched to Cable Lateral Raise — and later to Cable Y-Raise when mobility allowed it. Cables can be set up so their resistance profile matches what the shoulder tolerates best, and with good execution they provide a more even tension pattern throughout the entire movement, rather than being very heavy at one specific point in the movement. It feels safe and natural.

We ensured optimal execution throughout with controlled tempo in all exercises.

Everything else ran as normal. Both for legs and upper body.

That is the essence of our approach: We adapt what needs to be adapted — and keep everything that can still be done. Systemic strength, metabolic health and training habits were maintained all the way through.

The course took approximately 18 months. Today Riad trains exactly as before. No pain, no restrictions in range of motion.

What Riad valued the most was our honesty. We didn't promise him a quick fix. We told him what the research says and gave him a plan he could follow while time did its work.

"I could stop searching for treatments and just focus on my life," he said. "Knowing that I could still train made the 18 months far easier to get through." — Riad

The best exercises for frozen shoulder

There is not one set of frozen shoulder exercises that fits everyone. It depends on how much range of motion you have right now and what you can tolerate in terms of pain.

The most important principle is: Keep training what you can. Not just the shoulder — the entire body. Most people think "frozen shoulder exercises" means isolated shoulder exercises. But we want to remove focus from the painful area so it doesn't take up too much space in your awareness. It's about getting the pain-dampening effect from the training — not about seeking out the discomfort.

The most effective approach is to continue a full-body training program with individual adaptations — exactly as we did with Riad.

Here are the general principles we typically adapt frozen shoulder exercises from:

Press exercises: Change the angle so the shoulder is not forced into abduction. A decline angle on Machine Chest Press is often the first thing we reach for — it is tolerated well by most, even with markedly reduced range of motion.

Pull exercises: Start with Cable Row if you cannot get the arms overhead. Reintroduce Cable Pulldown gradually — possibly via a leaned-back position that is slowly straightened up over time. Consider adding a one-arm row for the unaffected side, to train it as heavy as possible — this also provides a spill-over effect in terms of strength maintenance in the affected shoulder.

Shoulder isolations: Drop the ones that hurt too much. Cable variants (Cable Lateral Raise, Cable Y-Raise) can be adapted so the resistance profile matches what the shoulder tolerates best.

Overhead movements: Drop them temporarily. Shoulder Press can be reintroduced when range of motion allows it.

Lower body: Trains exactly as normal. A frozen shoulder changes nothing about your ability to squat, do leg curls or leg extensions.

The healthy shoulder: Trains exactly as normal.

Tempo and control: We ensure controlled tempo in all exercises — it is always important, but even more so when you are working around a limitation.

Your progression in weight and repetitions follows our double progression method: You choose a repetition zone — typically 6-8 repetitions — and work your way up in repetitions with the same weight. When you reach 8 repetitions in all sets with good technique, you increase the weight and start over from 6. Our training machines make it possible to increase by 0.5 to 2.5 kg at a time — a precision that is crucial for systematic progress in exercises where the starting weight is already relatively low to begin with.

It sounds simple. And it is. But it is also extremely effective, because the load increases systematically over time, even while the shoulder is limited.

When should you see a doctor?

A frozen shoulder can be diagnosed clinically — meaning a doctor or physiotherapist can typically make the diagnosis based on your symptoms and a physical examination. There is normally no need for imaging, unless there is suspicion of other conditions such as a rotator cuff injury.

See a doctor if: You experience sudden, severe pain in the shoulder after a fall or an accident. There may be an injury that requires different treatment. You have diabetes or metabolic disease and notice increasing stiffness in the shoulder. Early clarification can help you plan the right course. The pain is so intense that it prevents sleep over an extended period, and painkillers don't help. In acute cases, your doctor can assess whether a cortisone injection is relevant for pain relief. You are unsure whether it is a frozen shoulder or something else. An examination can provide clarity — and clarity often brings peace of mind, if it is received together with clear advice on what to expect going forward and what is within your own control.

The most important thing is that a diagnosis does not need to stop you. Your body is not broken — it simply needs time and the right approach.

Frequently asked questions about frozen shoulder

How do you test for frozen shoulder?

A frozen shoulder test is a clinical examination where the doctor assesses both active and passive range of motion. The most characteristic finding is markedly reduced external rotation — you have difficulty rotating the arm outward, regardless of whether you do it yourself or someone helps. Range of motion is restricted in both cases, which distinguishes frozen shoulder from e.g. rotator cuff problems, where passive range of motion is often better than active.

Does massage help with frozen shoulder?

No. Massage can provide temporary pain relief and feel pleasant, but there is no evidence that it changes the course of the condition or accelerates recovery. The problem is in the capsule itself, not in the muscles. If massage helps you relax and sleep better, that is fine as a supplement — but it should not be your primary strategy.

Can you get sick leave for frozen shoulder?

Yes, but it is rarely necessary. If your work requires heavy overhead lifting or other shoulder-loading work, sick leave during acute periods can make sense. But for most office jobs and light physical jobs, it is neither necessary nor desirable to stop completely. The most important thing is to remain active — inactivity typically worsens the course.

Can strength training worsen a frozen shoulder?

No — as long as you train within what the shoulder can tolerate. The research actually shows the opposite: structured activity within the pain limit delivers better results than either inactivity or aggressive treatment. The key is to adapt the exercises — not to stop training.

How long does a frozen shoulder take to resolve?

1-3 years from the first symptoms to full or near-full range of motion. Some regain function faster, while others — especially diabetics — may experience a longer course. Regardless of the duration, the condition resolves over time.

Should I wait to train until the pain is gone?

No. That is one of the most widespread misconceptions. The research — and our experience with over 8 years of client work — consistently shows that those who remain active and adapt their training have better results than those who wait. You should not train through pain, but you should train around it.

Is heat good for frozen shoulder?

No, there is no evidence that heat changes the course or accelerates recovery. Heat can provide temporary relief and feel nice — especially in periods with a lot of stiffness — but it is symptom treatment, not a solution. Use it as a supplement if it helps you, but don't let it replace active training.

Ready to get through your frozen shoulder strong?

If you have shoulder pain and are unsure about what you can and cannot do, we understand. It is a frustrating condition.

But you don't need to wait. And you don't need to figure it out alone.

Book your free start-up conversation, and we will go through together how a training program can look for you — exactly as we did with Riad.

References

Rangan, A., Brealey, S. D., Keding, A., et al. (2020). Management of adults with primary frozen shoulder in secondary care (UK FROST): a multicentre, pragmatic, three-arm, superiority randomised clinical trial. The Lancet, 396(10256), 977-989. https://doi.org/10.1016/S0140-6736(20)31965-6

Diercks, R. L., & Stevens, M. (2004). Gentle thawing of the frozen shoulder: a prospective study of supervised neglect versus intensive physical therapy in seventy-seven patients with frozen shoulder syndrome followed up for two years. Journal of Shoulder and Elbow Surgery, 13(5), 499-502. https://doi.org/10.1016/j.jse.2004.03.002

Çelik, D. (2023). Oral corticosteroids vs. exercises on treatment of frozen shoulder: a randomized, single-blinded study. Journal of Shoulder and Elbow Surgery, 32(6), 1234-1241. https://pubmed.ncbi.nlm.nih.gov/36842462/

Brealey, S., Northgraves, M., Kottam, L., et al. (2020). Surgical treatments compared with early structured physiotherapy in secondary care for adults with primary frozen shoulder: the UK FROST three-arm RCT. Health Technology Assessment, 24(71). https://pubmed.ncbi.nlm.nih.gov/33292924/

Hollmann, L., Halaki, M., Kamper, S. J., Haber, M., & Ginn, K. A. (2018). Does muscle guarding play a role in range of motion loss in patients with frozen shoulder? Musculoskeletal Science and Practice, 37, 64-68. https://doi.org/10.1016/j.msksp.2018.07.001